Improvement in steam-injectors



UNITED STATES VPATENT OFFICE.

SAMUEL BENSON AND JAMES BENSON, OF CENTRALIA, ILLINOIS.

IMPROVEMENT IN STEAM-INJECTORS.

Specification forming part of Letters Patent No. 137,651, dated April 8, 1873; application iiled February 21, 1873. I

" To all whom 'it may concern:

Beit known that we, SAMUEL BENsoN and JAMES BENSON, of Centralia, in the county of Marion and in the State of Illinois, have invented certain new and useful Improvements in Steam-Injectors; and do hereby declare that the following is a full, clear, and exact description'thereof,` reference being had to the accompanying drawing and to the letters of reference marked thereon making' a part of this specification. j

Our invention relates to that class of directactin g steam-pumps or steam water-drivers known as injectors; and the nature of our invention consists in the construction and arrangement of an injector or steam-pump with adjustable water-nozzle and one or more adjustable steam-nozzles, which injector may be applied to any of the common uses to which the ordinary cylinder and piston lift and force pumps may be used, or by locating them at suitable intervals along the line of pipe between the water-supply and point of discharge, water may be forced to any pointl required.

In order to enable others skilled in the art to which our invention appertains to make and use the same, we will now proceed to describe its construction and operation, referring to the annexed drawing, which represents a vertical section of our invention.

H represents the chamber 5 A, the suctionpipe; K, the discharge-pipe; and G, the contracted and adjustable water-nozzle. C represents the steam-pipe terminating in the nozzle-holder I, and D and E are the adjustable steamnozzles. The chamber His a plain casting of suitable metal, into the side of which the steam-pipe or nozzleholder I is cast or otherwilslefsecured. The top and bottom ends of the c mber are threaded for the reception of the standard sizes of steam or gas pipe; or these ends may be provided with suitable flanges, or other form of couplings, to connect with the various pipes to which the pump may be attached. The upper or contracted water-nozzle G is screwed into the neck of the chamber H, thus permitting of Aa vertical movement to allow its adjustment with reference to its height above the steam-nozzlesl) and E. The steam-nozzle E is formed in the steampipe and nozzle-holder I. ",lhe movable nozzle D is bored to the required size and depth. Near its lower end it is perforated through its sides in a line with the steam-passage G to admitthe steam passing into it and from there upward, as indicated'by thebent and straight short arrows. The lower end of the nozzle D is made tapering, the large end downward, and tapering upward to the open"- ing of the nozzle E, thus admitting of the partial opening and closing of the nozzle E.

These nozzles may be multiplied asoften as may be deemed necessary, according to the volume and height of the column of water to be raised, by widening the base of the nozzle-holder I, and then preparing the next or movable nozzle so as to receive another nozzle inside it, with suitable passages for steam, and so on.

The operation is as follows: The pump being placed in position, and the properI connec= tions being made between the steam-boiler and pump and the water-*supply and point of delivery, steam is admitted into the pipe C. The steam rushes through the pipe and out at the openings E E and D,'as indicated by the short arrows, driving the air out of the chamber and pipes, and is immediately fola lowed by the water, the course of which is represented by the long arrows. The water now comes in contact with the upward current of steam at E, which accelerates its motion toward the opening of the nozzle D. Here it receives additional impetus, and is driven forcibly into the tapering nozzle G, and thence outward into the pipe K; thence again to its point of iinal discharge. If the resistance be too great for one pump to perform the required service, others may be added at proper intervals, the dischargepipe of the lower one forming the suction-pipe of the next higher, and so on, each pump being connected with steam communication to the boiler.

As will be seen, the water-nozzle and steamnozzle are adjustable to each other with ref erence to the nature of the work to be accomplished. i

When the water-supply and point of discharge are in close proximity, it requires c0mparatively little force to project the water. The upper or water nozzle may be raised, allowing free ingress of water, as the steamopening may be more than necessary for ecov der to secure sharp quick action of the initial pressure. The nozzle D is now raised, which closes the nozzle E to the required size.

In cases where the opposite of this is to be dealt with, the water-nozzle is lowered to the proper point, thus affording a lateral brace to resist the action of the downward pressure of the water-column, bringing the water close in and over the upward action of the steam, at the same time restricting the inflow of the water to the actual capacity to deliver, thus preventing the'gurgling and churning of the wateraround the nozzle, which absorbs steam Without benet and impairs the suction, and, as a necessary result, gorges the pump, the steam accumulating around the nozzle drivin g the Water down the suction-pipe, and thus breaking the stream. This difficulty we find to be practically obviated bythis adjustment of the upper nozzle in connection with the adjustment of the opening of the steam-nozzle, whereby an equilibrium is established that can only be denitely reached by actual adjustment when the pump is put up, so varied are the conditions under which they are operated.

The economical operation of a pump inmany ycases is a matter of prime necessity, when fuel is scarce, boiler capacity limited, and the duty required is large; hence it is evident that no arbitrary adjustment can meet all cases. l

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

l.' In an injector or steam-pump of the class herein referred to, the combination of an adjustable water-nozzle and one or more adjustae ble steam-nozzles, for the purposes set forth.

Y 2. The chamber H, having pipes A, K, and C, and nozzle-holder I, in combination with thestationary steam -nozzle E, one or more adjustable steam-nozzles,D, and an adjustable water-nozzle, G, all substantially as and for the purposes herein set forth.

In testimony that we claim the foregoing wechav'e hereunto set our hands this 23th day of January, 1873.

SAMUEL BENSON. JAS. BnNsoN.

' Witnesses:

SAML. SToREa, GEORGE HEPPERT. 

